... 2.Shortly delivery time 3.Best after-sale servie SX460 for brushless generator: AVR SX460 is a half-wave phase-controlled thyristor type ... Automatic Voltage Regulator(AVR) and forms part of the excitation system for a ... : R230,R438,R448,R449,R250 Universal AVR:GAVR-8A,GAVR-12A,GAVR-15A AVR for brush generator:YS-100,YS-110,YS-120,YS ...